Adjustable closure devices with handle and locking mechanisms

ABSTRACT

Embodiments of the invention are directed to adjustable closure devices. One embodiment has a strap, a connector attached to a strap end, a chafe mounted on the strap behind the connector, and a hinged handle on the chafe. The chafe has a two outer bars and a central bar, these bars defining strap through-paths. The strap end-region has path segments arranged, directionally from the strap&#39;s central region toward the strap end at the chafe, or, in embodiments that configure the strap as a pulley, at the connector. An adjustable length region of the strap spans between the chafe and the connector. An elevatable handle configuration allows a user to pull the chafe to which it is connected along the strap, away from connector. As the chafe moves along the strap, the strap can transition between a large circumference configuration and small circumference. Some embodiments have a strap friction-locking mechanism associated with the handle and the chafe.

CROSS REFERENCES

This application is a continuation of U.S. Ser. No. 17/615,789, filedDec. 1, 2021, which is the National Stage of International PatentApplication No. PCT/US2020/036140, filed Jun. 4, 2020, which claimspriority to U.S. Provisional Patent Application No. 62/857,320, as filedon Jun. 5, 2019, and to U.S. Provisional Patent Application No.62/937,808, as filed on Nov. 20, 2019, all of which are herebyincorporated by reference herein in their entireties.

TECHNICAL FIELD

This application is directed to adjustable closure devices that may beapplied to articles, and particularly to wearable articles.

BACKGROUND

Adjustable closure devices that are adjustable by way of tensioninglines, such as cable-form or strap form lines have widespread use,including use as wearable article.

SUMMARY OF THE TECHNOLOGY

In one embodiment an adjustable closure device, one with unilateralstrap length adjustability, the device includes (a) a strap thatincludes a first end-region, and a central region; (b) a connectableconnector, wherein the connector is attached to a terminus of the strapend-region, and wherein the connector includes a first strap pivot barand a second pivot bar, internal to the first strap pivot bar; and achafe mounted at the end of at the strap end-region. The chafe includesthree parallel bars, a first outer bar, a central bar, and a secondouter bar, wherein the first outer bar is proximate the first end-regionof the strap, the second outer bar is proximate the central-region ofthe strap, and wherein a first strap pass-through gap is disposedbetween the central bar and the first outer bar, and a second strappass-through gap is disposed between the central bar and second outerbar. In this embodiment, the strap end-region has a strap path thatincludes segments arranged, directionally from the strap's centralregion and toward the strap terminus, to (a) pass through the firstchafe gap, (b) pass by the central chafe bar, (c) pass through thesecond chafe gap, (d) pass toward the connector, to loop around thesecond pivot bar and reversing direction, (e) returning toward the chafeto pass around the central bar of the chafe and reversing direction, andfinally (f) returning toward the connector, to loop around the firstpivot bar of the connector and there to terminate. In some embodiments,an adjustable length region of the strap has an adjustable span betweenthe chafe and the connector; and a handle connected to the chafe,wherein the handle is ergonomically configured to allow a user to pullthe chafe along the strap, away from the connector. In theseembodiments, when the chafe is allowed to move with respect to the strapand wherein the strap can move between two configurations, wherein, bycomparison, a first configuration has a large strap circumference and asecond configuration has a small strap circumference.

In some of these embodiments, the strap path includes a pulleyarrangement in which the strap reverses direction twice, therebyproviding mechanical advantage upon pulling the chafe with respect tothe strap, wherein the force required to shorten the adjustable lengthregion of strap is less than that which would be required absent thepulley arrangement to move the device from the first configuration tothe second configuration. In some of these embodiments, the mechanicaladvantage is about 2:1.

In some of these embodiments, the adjustable closure device, the centralregion of the strap is continuous with a second end region of the strap.

In some of these embodiments the connector is mateable with a secondconnector attached to a second terminus of the strap. Further, in someof these embodiments, the strap attached to the second terminus of thestrap includes a second adjustable length region.

In some of these embodiments, the second connector is attached to aseparate article. And in some embodiments, the central region of thestrap is attached to an article.

In some of these embodiments of an adjustable closure device, the chafeincludes a connector-side and a central-side, and wherein the handle isconnected to the chafe at a mounting site proximate the central bar ofthe chafe, and wherein the mounting site has a hinge supporting thehandle. In some particular embodiments, the handle of the chafe canrotate at the hinge between a down position and an elevated position,wherein the elevated position elevates the handle on the central side ofthe chafe. And in some particular embodiments, the chafe has ahandle-down retention mechanism.

In some of these embodiments of an adjustable closure device, the chafeincludes a strap friction-locking mechanism, which, when in a lockedposition, disallows strap slippage through the chafe, and which, when inan unlocked position, allows strap slippage through the chafe. Inparticular of these embodiments, the adjustable length region of thestrap includes two overlapping sections of the strap, a first sectionproximate the central region of the strap and a second section proximatethe connector, and wherein the strap friction-based locking mechanism ispositioned to engage on the adjustable length region of the strap.

In some embodiments of an adjustable closure device, the strapfriction-locking mechanism includes a configuration wherein a base ofthe handle and the central bar of the chafe are integrated together, andwherein the central bar is configured as a one-sided cam. In particularof these embodiments, the one-sided cam is rotated such that the cam hasa maximal peak height over the side bars of the chafe, the chafe is in alocked position, and wherein when the one-sided cam is rotated such thatthe one side cam does not rise over a minimal circumference of thecentral bar, the chafe is in an unlocked position.

In some embodiments of an adjustable closure device, the strapfriction-locking mechanism includes a configuration wherein a base ofthe handle and the central bar of the chafe are integrated together, andwherein the central bar is configured as a two-sided cam. In particularof these embodiments, when the two-sided cam is rotated such that thecam has a maximal peak height over the side bars of the chafe, the chafeis in a locked position, and wherein when the two-sided cam is rotatedsuch that the two-sided cam does not rise over a minimal circumferenceof the central bar, the chafe is in an unlocked position.

In some embodiments of an adjustable closure device, the chafe handleincludes two parts, an outer handle and an inner handle, wherein theinner handle is nested within the outer handle and connected by a hingethereto, wherein the inner handle and the outer handle are adjustablewith respect to each other such that the two handle parts can be spacedapart or aligned together, wherein when the two handle parts are spacedapart, the chafe is in a locked position, and when two handle parts arealigned together, the chafe is in an unlocked position.

Some of these embodiments further include a spring that when in anuncompressed state, maintains the first and second handle parts in thespaced apart configuration such that the chafe is in the unlockedposition, and when the spring is in a compressed state, the first andsecond handle parts are aligned together, and the chafe is a lockedconfiguration. In brief, in embodiments of an adjustable closure devicehaving a two-part handle with a spring controlled locking mechanism, thetwo-part handle has a spring-based bias that defaults the chafe into alocked configuration and remains in the locked configuration until amanually directed force moves the mechanism into a second, unlocked,configuration which diminishes the friction between the chafe and thestrap, thereby allowing ease in adjusting an adjustable region of thestrap, thereby allowing ease in moving the strap back and forth betweena small circumference and large circumference configuration.

In some embodiments of an adjustable closure device, the handle includesa cam-configured base that is proximate the central bar of the chafe butseparated therefrom by a strap gap through which the strap path passes.And in some particular embodiments, when the handle is in a downposition the cam aspect of the base minimizes the strap gap, forming alocked configuration, and wherein when the handle is in an elevatedposition, the cam aspect of the base maximizes the strap gap, forming anunlocked configuration.

In a second embodiment of an adjustable closure device, one withbilateral strap adjustability, the device includes a strap having afirst end-region, a central region, and a second end-region; twomutually connectable connectors, a first connector and second connector,wherein each connector is attached is to a terminus of one of the strapend-regions wherein each connector includes a first strap pivot bar andsecond pivot bar, internal to the first strap pivot bar; and two chafes,one mounted at the end of at each strap end-region. Each chafe includesthree parallel bars, a first outer bar, a central bar, and a secondouter bar, wherein the first outer bar is proximate the first end-regionof the strap, the second outer bar is proximate the central-region ofthe strap, and wherein a first strap pass-through gap is disposedbetween the central bar and the first outer bar, and a second strappass-through gap is disposed between the central bar and second outerbar. Further, each strap end-region includes a strap path havingsegments arranged, directionally from the strap's central region andtoward the strap terminus, to (a) pass through the first chafe gap, (b)pass by the central chafe bar, (c) pass through the second chafe gap,(d) pass toward the connector, to loop around the second pivot bar andreversing direction, (e) returning toward the chafe to pass around thecentral bar of the chafe and reversing direction, and finally (f)returning toward the connector, to loop around the first pivot bar ofthe connector and terminate thereto. An adjustable length region of thestrap includes an adjustable span between the each of the two chafes,the two chafes being connected by the connectors; and a handle connectedto each chafe, wherein the handle is ergonomically configured to allow auser to pull each chafe along the strap, away from the first connector.Each chafe is allowed to move with respect to the strap and wherein thestrap can move between two configurations, wherein, by comparison, afirst configuration having a large strap circumference and a secondconfiguration having a small strap circumference. In some of theseembodiments of the adjustable closure device, the strap path includes apulley arrangement in which the strap reverses direction twice, therebyproviding a 2:1 mechanical advantage upon pulling the chafes withrespect to the strap, in terms of the force required to shorten theadjustable length region, thereby moving from the first configuration tothe second configuration. In particular of these embodiments themechanical advantage is about 2:1.

BRIEF DESCRIPTION OF THE FIGURES

FIGS. 1A-1B show top perspective views of an embodiment of an adjustableclosure device in two convertible configurations, a large circumferenceconfiguration and a small circumference configuration. FIG. 1A is a topperspective view of an embodiment of an adjustable closure device in alarge circumference configuration.

FIG. 1B is a top perspective view of an embodiment of an adjustableclosure device in a small circumference configuration.

FIGS. 2A-2C are views of an embodiment of an adjustable closure device.FIG. 2A is a perspective view of an embodiment of an adjustable closuredevice, showing, in particular, the two ends of a strap, the strapsconnected by mutually connectable elements, and a chafe disposed on bothstraps into which the strap ends terminate.

FIG. 2B is a side view of the embodiment of the adjustable closuredevice of FIG. 2A.

FIG. 2C is a detailed view of a portion of FIG. 2B.

FIGS. 3A-3C show views of an embodiment of an adjustable closure devicewith bilateral strap adjustability, showing in particular, the path of astrap through the connectors and chafes within the device. FIG. 3A is aface view of an adjustable closure device with bilateral strapadjustability, showing in particular, the path of a strap through theconnectors and chafes within the device.

FIG. 3B is a side view of an adjustable closure device with bilateralstrap adjustability, showing in particular, the path of a strap throughthe connectors and chafes within the device.

FIG. 3C is a detailed view of a portion of FIG. 3B.

FIGS. 4A-4C show views of an embodiment of an adjustable closure devicewith unilateral strap adjustability and double loop of strap between aconnector and a chafe, thereby conferring a mechanical advantage,showing in particular, the path of a strap through the connectors andchafes within the device. FIG. 4A is a face view of an adjustableclosure device with unilateral adjustability, showing in particular, thepath of a strap through the connectors and chafes within the device.

FIG. 4B is a side view of an adjustable closure device with unilateraladjustability, showing in particular, the path of a strap through theconnectors and chafes within the device.

FIG. 4C is a detailed view of a portion of FIG. 4B.

FIGS. 5A-5E show views of an embodiment of an adjustable closure device,showing in particular, views of the path of a strap through a connectorand a chafe within the device. FIG. 5A is a face view of a chafe andhinged handle.

FIG. 5B is a side view of a chafe and hinged handle, with the handle ina down position.

FIG. 5C is a side view of a chafe and hinged handle, with the handle inan elevated position.

FIG. 5D is a side view of a chafe and hinged handle, with the handle ina down position, and further showing the path of a strap through thechafe.

FIG. 5E is a side view of a chafe and hinged handle, with the handle inan elevated position, and further showing the path of a strap throughthe chafe.

FIGS. 6A-6E show views of an embodiment of an adjustable closure devicewith a handle having an integrated one-sided cam that acts asfriction-based strap lock. FIG. 6A is a face view of a chafe and handlehaving an integrated one-sided cam that acts as friction-based straplock.

FIG. 6B is a side view of a chafe and handle having an integratedone-sided cam that acts as friction-based strap lock, the handle in adown position.

FIG. 6C is a side view of a chafe and handle having an integratedone-sided cam that acts as friction-based strap lock, the handle in anelevated position.

FIG. 6D is a side view of a chafe and handle having an integratedone-sided cam that acts as friction-based strap lock, the handle in adown position, and further showing the path of a strap through thechafe.

FIG. 6E is a side view of a chafe and handle having an integratedone-sided cam that acts as friction-based strap lock, the handle in anelevated position, and further showing the path of a strap through thechafe.

FIGS. 7A-7F show views of an embodiment of an adjustable closure devicewith a chafe having a central bar configured as a two sided cam thatacts as friction-based strap lock. FIG. 7A is a face view of anembodiment of an adjustable closure device with a chafe having a centralbar configured as a two sided cam that acts as friction-based straplock.

FIG. 7B is a side view of an embodiment of an adjustable closure devicewith a chafe having a central bar configured as a two sided cam thatacts as friction-based strap lock, with the handle of the chafe in adown position.

FIG. 7C is a side view of an embodiment of an adjustable closure devicewith a chafe having a central bar configured as a two sided cam thatacts as friction-based strap lock, with the handle of the chafe in anelevated position.

FIG. 7D is a side view of an embodiment of an adjustable closure devicewith a chafe having a central bar configured as a two sided cam thatacts as friction-based strap lock, with the handle of the chafe in adown position, and further showing the path of a strap through thechafe.

FIG. 7E is a side view of an embodiment of an adjustable closure devicewith a chafe having a central bar configured as a two sided cam thatacts as friction-based strap lock, with the handle of the chafe in anelevated position, and further showing the path of a strap through thechafe.

FIG. 7F is a side view of an embodiment of an adjustable closure devicewith a chafe having a central bar configured as a two sided cam thatacts as friction-based strap lock, and with an implement attached to thebottom side of the handle.

FIGS. 8A-8G show views of an embodiment of an adjustable closure devicewith a two-part handle that has a spring based mechanism that acts asfriction-based strap lock. FIG. 8A is a face view of an embodiment of anadjustable closure device with a two-part handle that has a spring basedmechanism that acts as friction-based strap lock.

FIG. 8B is a detailed view of the spring based mechanism shown in FIG.8A.

FIG. 8C is a side view of an embodiment of an adjustable closure devicewith a two-part handle that has a spring based mechanism that acts asfriction-based strap lock with the two-part handle of the chafe in adown position.

FIG. 8D is a face view of an embodiment of an adjustable closure devicewith a two-part handle that has a spring based mechanism that acts asfriction-based strap lock with the two-parts of the handle in aseparated position, the spring in an uncompressed configuration.

FIG. 8E is a face view of an embodiment of an adjustable closure devicewith a two-part handle that has a spring based mechanism that acts asfriction-based strap lock with the two-parts of the handle in a closedposition, the spring in a compressed configuration.

FIG. 8F is a side view of an embodiment of an adjustable closure devicewith a two-part handle that has a spring based mechanism that acts asfriction-based strap lock with the two-part of the handle in downposition, the two parts of the handle in a separated position, andfurther showing the path of the strap through the connector and thechafe.

FIG. 8G is a side view of an embodiment of an adjustable closure devicewith a two-part handle that has a spring based mechanism that acts asfriction-based strap lock with the two-part of the handle in an elevatedposition, the two parts of the handle in a compressed position, andfurther showing the path of the strap through the connector and thechafe.

FIGS. 9A-9E show views of an embodiment of an adjustable closure devicehaving a handle with an integrated cam positioned within the handlebase, the cam proximate the central bar of a chafe, the cam configuredto act as friction-based strap lock. FIG. 9A is a face view of a chafeand hinged handle of an embodiment of an adjustable closure devicehaving a handle with an integrated cam positioned proximate the centralbar of a chafe, the cam configured to act as friction-based strap lock.

FIG. 9B is a side view of a chafe and hinged handle of FIG. 9A, with thehandle in a down position.

FIG. 9C is a side view of a chafe and hinged handle FIG. 9A, with thehandle in an elevated position.

FIG. 9D is a side view of a chafe and hinged handle with the handle in adown position as in FIG. 9B, but further showing the path of a strapthrough the chafe.

FIG. 9E is a side view of a chafe and hinged handle with the handle inan elevated position as in FIG. 9C, but further showing the path of astrap through the chafe.

FIGS. 10A-10C show views of a method of connecting the connectors of anembodiment of a closure device, engaging the handles of the chafes, anddrawing the handles apart to tighten the straps. FIG. 10A shows a userengaging the connectors of two ends of a strap, preparing to connectthem.

FIG. 10B shows a user engaging the handles of the chafes, and elevatingthem, preparing to draw the chafes apart.

FIG. 10C shows the chafes now pulled apart, the strap now tightened.

FIGS. 11A-11M show various applications of an adjustable closure deviceto products. FIG. 11A shows application of an embodiment of anadjustable closure device to a full sized backpack.

FIG. 11B shows application of an embodiment of an adjustable closuredevice to a day backpack.

FIG. 11C shows application of an embodiment of an adjustable closuredevice to a protective vest.

FIG. 11D shows application of an embodiment of an adjustable closuredevice to motorcycle full body suit.

FIG. 11E shows application of an embodiment of an adjustable closuredevice to protective knee pads.

FIG. 11F shows application of an embodiment of an adjustable closuredevice to a pair of protective pants.

FIG. 11G shows application of an embodiment of an adjustable closuredevice to an ankle brace.

FIG. 11H shows application of an embodiment of an adjustable closuredevice to a prosthetic socket.

FIG. 11I shows application of an embodiment of an adjustable closuredevice to a back brace.

FIG. 11J shows application of an embodiment of an adjustable closuredevice to a knee brace.

FIG. 11K shows application of an embodiment of an adjustable closuredevice to a post-operative leg brace.

FIG. 11L shows application of an embodiment of an adjustable closuredevice as a built-in belt for a pair of pants.

FIG. 11M shows application of an embodiment of an adjustable closuredevice as a belt for a pair of pants.

DETAILED DESCRIPTION

Overview and Terminology

Embodiments of an adjustable closure device are depicted in FIGS.1A-11M. FIGS. 1A-1B are particularly helpful in setting out aspects ofterminology used herein, which distinguishes aspects of variousembodiments provided. Embodiments of adjustable closure devices arecommonly depicted with straps in a connected state, connected bymutually connectable connectors, as in the embodiment of FIGS. 1A-1B. Asshown, the adjustable closure device embodiment includes a singlecontinuous strap, with the connectors positioned at each end of thestrap, and a chafe with a handle positioned on the strap near aconnector. Accordingly, each strap has two end regions, and a centralregion between the two end regions. The end region includes a terminus,typically attached to a central bar in a chafe. The strap's end regionsmay both be adjustable in length by virtue of the strap interaction ofeach connectors with its nearby chafe, and the arrangement of the pathstrap through the connector and chafe. The length of the strap betweenthe connector and the chafe may be considered an adjustable region ofthe strap, in which the strap is present in the form of two overlappingsections.

In some embodiments of the adjustable closure device, only one of thetwo end regions is adjustable by way of the connector-chafe interaction.The non-adjustable end region, although it has a connector that'scompatible with the connector on the adjustable end region, may simplyhave no length-adjustable features. In another embodiment, an adjustableend region may not connect with a strap, per se, but rather directly toan article.

Some embodiments of the adjustable closure device do not necessarilyhave a single continuous strap. The central region of a strap may beintervened by another article, which, of course, needs to be able toefficiently translate tension applied to it by the end regions of thestrap, thereby creating a continuous strap functionality.

Adjustability of a strap's adjustable region, when connectors areconnected, translates into adjustability of a circumference enclosed bythe strap. Accordingly, an adjustable closure device can assume a largecircumference configuration and small circumference configuration, andmove between the large and small circumferences, and stabilize at anycircumference between large and small. Typically, a user engages anadjustable closure device when it is in the large circumferenceconfiguration, and manually adjusts to a small circumferenceconfiguration.

As described in a method provided herein, a user moves the adjustableclosure device between the large and small configurations by manuallyoperating a handle on the chafe, and thereby sliding the chafe withrespect to the strap on which it is mounted. Chafe handles, incooperation with the chafe as a whole, as provided herein, may bestructurally configured to serve two basic functions: (1) to move thechafe with respect to the strap, and (2) to engage or disengage afriction locking mechanism that resists slippage of the chafe on thestrap. Slippage is a default tendency when the strap is under tension,as may occur in a small circumference configuration. Handle embodimentsare typically connected to the chafe, and include a hinge which allowsthe handle to assume a down position or an elevated position. Typically,the down position is a locking position that prevents strap slippage,and the elevated position is an unlocked position that allows strapslippage.

The chafe handles of adjustable closure devices, as provided herein,typically have an ergonomic structure and consequent ergonomicfunctionality. “Ergonomic” refers to ease and comfort as held in thehands of a user, and ease in comfort in manipulating an adjustableclosure device. Adjustable closure devices can be small and difficult tomanipulate by people, who may, for example, have hands that arerelatively large and have difficulty manipulating small objects, or bypeople with hands that are relatively small, and/or people whose handshave insufficient strength to allow easy grasping and manipulation of anobject.

As enumerated below in the “Embodiment List” section, and as depicted inFIGS. 1A-11M, four basic structural embodiments of an adjustable closuredevice 100 are provided. These structural embodiments, as defined by keyfeatures, include (1) an adjustable closure device 101 with unilateraladjustability, (2) an adjustable closure device 102 with bilateraladjustability, (3) an adjustable closure device 101P with unilateraladjustability and a chafe that provides mechanical advantage to a strapbeing pulled by a user to reduce the circumference enclosed by the strapor distance spanned by the strap, and (4) an adjustable closure device102P with bilateral adjustability and a chafe that provides a mechanicaladvantage to a strap being pulled by a user to reduce the circumferenceenclosed by the strap,

Each of these basic structural embodiments may further include a strapfriction-locking mechanism, of which there are several types: (1) anintegrated chafe handle and central bar of the chafe, the central barconfigured as a one-sided cam, (2) an integrated handle and central barof the chafe, the central bar configured as a two-sided cam, (3) a chafewith a two-part handle, a spring controlling the separation of the twohandle parts, (4) a handle with a base configured as a cam, the handleand the central bar being separate pieces.

Additionally, a method of manually adjusting the circumference of thedevice is provided.

Figures that Exemplify Adjustable Closure Device Embodiments

FIGS. 1A-1B show top perspective views of an embodiment of an adjustableclosure device 102 in two convertible configurations; FIG. 1A shows alarge circumference configuration and FIG. 1B shows a smallcircumference configuration. Adjustable closure device 102 includes astrap 20, with strap end regions 22 and a central region 24, andadjustable regions 25. Adjustable closure device 102 further includestwo connectors 40 (connected together) and two chafes 50.

Strap adjustable regions 25 are bounded by their respective connector 40and chafe 50. In FIG. 1A, where adjustable closure device 102 is in alarge circumference configuration, the two adjustable regions are short.In FIG. 1AB, where adjustable closure device 102 is in a smallcircumference configuration, the two adjustable regions are long.

FIGS. 2A-2C are views of an embodiment of a bilateral adjustable closuredevice 102. FIG. 2A is a face view that shows the two end regions of astrap 20, the straps connected by mutually connectable connectors 40(each connector having a strap pivot bar 44) and a chafe 50 disposed onboth straps into which the strap ends terminate. Chafe 50 has a handle60. “Bilateral” refers to a device configuration in which both ends of astrap (or the strap on both sides of engaged connectors) are adjustable.Inasmuch as FIG. 2C shows only a single chafe and connector, FIG. 2C canalso represent an aspect of a unilateral adjustable closure device 101.

FIG. 2B is a side view of adjustable closure device 102; FIG. 2C is adetailed view of the left-hand portion of FIG. 2B, focusing on the pathof strap 20 through chafe 50 and connector 40, as well as showing chafe50 in some detail. Chafe 50 includes a first outer bar 53-1, a centralbar 54, and a second outer bar 53-2. First outer bar 53-1 and centralbar 54 define a strap pass through gap 56-1; second outer bar 53-2 andcentral bar 54 define a strap pass through gap 56-2.

The path of strap 20 through chafe 50 and connector 40 as shown in FIG.2B, and in greater detail in FIG. 2C is as follows. Each strapend-region provides a strap path in which strap segments arranged,directionally from the strap's central region toward a strap terminus 23at the central bar 54 of chafe 50, to (a) pass through the first chafegap 56-1, (b) pass by central chafe bar 54, (c) pass through the secondchafe gap 56-2, (d) loop around pivot bar 44 of connector 40, and then(e) return toward chafe 50, to loop around and attach to central bar 54of chafe 50.

FIGS. 3A-3C show views of an embodiment of an adjustable closure device102P with bilateral strap adjustability and with the strap configured asa pulley, showing in particular, the path of a strap through theconnectors and chafes within the device. FIG. 3A is a face view; FIG. 3Bis a side view, and FIG. 3C is a detailed view of a portion of FIG. 3B.FIG. 3A shows the two end regions of a strap 20, the straps connected bymutually connectable connectors 40P (each connector having a first strappivot bar 44-1 and a second pivot bar 44-2), and a chafe 50P disposed onboth straps into which the strap ends terminate, chafe 50P having ahandle 60. Inasmuch as FIG. 3C shows only a single chafe and connector,FIG. 3C can also represent an aspect of a unilateral adjustable closuredevice 101P.

Adjustable closure device 102P differs from adjustable closure device102 (FIGS. 2A-2C) because strap 20 of 102P is configured as a pulleywith a 2:1 mechanical advantage in terms of the manual force a userneeds to apply to chafe handle 60 to move the strap from a largecircumference toward a smaller circumference. Details of the strappulley arrangement are shown in the side views of FIG. 3B-3C.

FIG. 3B shows a pulley arrangement that involves chafe 50P, connector40P, and the path of strap 20 through both chafe 50P and connector 40P.The path of strap 20 through chafe 50P and connector 40P as shown inFIG. 3B, and in greater detail in FIG. 3C is as follows. Each strapend-region provides a strap path in which strap segments arranged,directionally from the strap's central region toward a strap terminus atconnector 40P, to (a) pass through the first chafe gap 56-1, (b) pass bythe central chafe bar 56-1, (c) pass through the second chafe gap 56-2,(d) pass toward connector 40P, to loop around the connector's secondpivot bar 44-2, (e) returning toward chafe 50P, to pass around centralbar 54P of the chafe, and (f) returning toward connector 40P to looparound and terminate the connector's second pivot bar 44-2. This strapand pivot arrangement, wherein the strap reverses direction twice, is apulley arrangement that provides a 2-fold mechanical advantage in termsof force required to move the strap from a large circumference toward asmaller circumference.

FIGS. 4A-4C show views of an embodiment of an adjustable closure device101P with unilateral strap adjustability and with the strap configuredas a 2:1 pulley system, showing in particular, the path of a strapthrough the connectors and chafes within the device. “Unilateral” refersto a device configuration in which end of a strap (or the strap on onlyone side of engaged connectors) is adjustable. FIG. 4A is a face view;FIG. 4B is a side view, and FIG. 4C is a detailed view of a portion ofFIG. 4B. FIG. 4A shows the two end regions of a strap 20, the strapsconnected by mutually connectable connectors 40P (the connector having afirst strap pivot bar 44-1 and a second pivot bar 44-2), and a chafe 50Pdisposed on both straps into which the strap ends terminate, chafe 50Phaving a handle 60.

Adjustable closure device 102P differs from adjustable closure device102 (FIGS. 2A-2C) because the strap is configured as a pulley, therebyproviding a 2:1 mechanical advantage in terms of the manual force a userneeds to apply to chafe handle 60 to move the strap from a largecircumference toward a smaller circumference or from a longer strap to ashorter strap, if the strap adjustment is linear or not circumferential.Details of the strap pulley arrangement are shown in the side views ofFIG. 3B-3C.

FIG. 4B shows a pulley arrangement that involves chafe 50P, connector40P, and the path of strap 20 through both chafe 50P and connector 40P.The path of strap 20 through chafe 50P and connector 40P as shown inFIG. 3B, and in greater detail in FIG. 4C is as follows. Each strapend-region provides a strap path in which strap segments arranged,directionally from the strap's central region toward a strap terminus atthe central bar 54 of chafe 40, to (a) pass through the first chafe gap56-1, (b) past the central chafe bar 54, (c) through the second chafegap 56-2, (d) around a second pivot bar 44-1 of connector 40P, (e)returning toward chafe 50P and thence around the central bar 54 of chafe50P, and (f) in a return direction, toward the strap's central region,to loop around and attach to the first pivot bar 44 of connector 40P.This strap and pivot arrangement, wherein the strap reverses directiontwice, is a pulley arrangement that provides a 2-fold mechanicaladvantage in terms of force required to move the strap from a largecircumference toward a smaller circumference or from a longer strap to ashorter strap, if the strap adjustment is linear or not circumferential.

FIGS. 5A-5E show views of an embodiment of an adjustable closure device101, showing in particular, views of the path of a strap through aconnector and a chafe within the device. FIG. 5A is a face view of achafe 50 and hinged handle 60. FIG. 5B is a side view of a chafe andhinged handle, with handle 60 in a down position, and FIG. 5C is a sideview of a chafe and hinged handle, with handle 60 in an elevatedposition. FIGS. 5D-5E both show a side view of a chafe and hinged handleand the path of a strap through chafe 50. In FIG. 5D, the handle is in adown position; in FIG. 5E, the handle is in an elevated position.Inasmuch as FIGS. 5A-5E show only a single chafe 50, these figures canrepresent also an aspect of a bilateral adjustable closure device 102.

Chafe 50 includes two outer bars, a first outer bar 53-1 (on the left asshown), a second outer bar 53-2 (on the right as shown), and a centralbar 54. The left side of chafe 50 is also the side on which a connector(not shown) is positioned. The right side of chafe 50 is the centralside of the chafe, the side which is proximate the central region of thestrap (FIGS. 1A-1B).

Chafe 50 further includes a handle 60. Handle 60 includes a handle basewhich, in this embodiment, is integral with central bar 54. A hinge 59connects handle 60 to central bar 54 (also the base handle 60) and,accordingly, to chafe 50, which allows the handle to rotate between adown position (as in FIGS. 5B and 5D) and an elevated position (as inFIGS. 5C and 5E).

FIGS. 5D and 5E are similar to 5B and 5D, respectively, except thatFIGS. 5D and 5E show the path of strap 20 through chafe 50. Arrow A1shows directionality of handle 60 elevating; arrow A2 shows thedirection of a manual pull that is allowed when handle 60 is in theelevated position; arrow A3 shows the direction that chafe 50 movesalong strap 20, when the handle is elevated (A1) and being pulled (A2).A manual pull, per arrow A2, pulls chafe 50 along strap 20, away fromthe connector and closer to the central region of strap 20. According,by a user manipulating handle 60 (per arrows A1, A2, and A3), the usercan move adjustable closure device 101 between a large circumferenceconfiguration and a small circumference configuration.

FIGS. 6A-6E show views of an embodiment of an adjustable closure device101-C1 with a handle 60-C1 that is integrated with the central bar 54-C1of a chafe 50-C1, the central bar being a one-sided cam that acts as acomponent of a friction-based strap lock. The “C1” designation refers toan embodiment that has a handle with a base, the base being integralwith a chafe central bar that is configured as a 1-sided cam, asdescribed below.

FIG. 6A is a face view of a chafe 50-C1 applicable to this embodiment.FIG. 6B is a side view showing the handle in a down position; FIG. 6C isa side view showing a handle 60-C1 in an elevated position. FIG. 6D is aside view showing handle 60-C1 in a down position, and further showingthe path of a strap 20 through the chafe. FIG. 6E is a side view ofshowing handle 60-C1 in an elevated position, and further showing thepath of a strap 20 through the chafe. FIGS. 6D-6E both show a side viewof a chafe 50-C1 and hinged handle 60-C1 and the path of a strap throughchafe 50-C1. In FIG. 6D, handle 60-C1 is in a down position; in FIG. 6E,the handle is in an elevated position. Inasmuch as FIGS. 6A-6E show onlya single chafe 50-C1, these figures can represent also an aspect of abilateral adjustable closure device 102-C1.

Chafe 50-C1 is applicable to both unilaterally adjustable embodiments,such as this one, and to bilaterally-adjustable adjustable closuredevices as also described herein.

Chafe 50-C1 includes two outer bars, a first outer bar 53-C11 (on theleft as shown), a second outer bar 53-C12 (on the right as shown), and acentral bar 54-C1, which includes a high friction surface of the cam, asindicated by the striated lines. The left side of chafe 50-C1 is alsothe side on which a connector (not shown) is positioned. The right sideof chafe 50-C1 is the central side of the chafe, the side which isproximate the central region of the strap (see FIGS. 1A-1B).

Chafe 50-C1 further includes a handle 60-C1. Handle 60-C1 includes ahandle base which, in this embodiment, is integral with (one and thesame as) central bar 54-C1, and which is configured a 1-sided cam. Ahinge 59 connects handle 60-C1 to central bar 54-C1 (also the base ofhandle 60-C1) and, accordingly, to chafe 50-C1, which allows the handleto rotate between a down position (as in FIGS. 6B and 6D) and anelevated position (as in FIGS. 6C and 6E). When handle 60-C1 is in adown position, its position is stabilized or retained by a retentionmechanism, exemplified by a pair of magnets M (labeled separately as Nand S) that are disposed on apposing sides of handle 60-C1 and chafe50-C1.

FIGS. 6D-6E are similar to FIGS. 6B-6D, respectively, except that FIGS.6D and 6E further show the path of strap 20 through chafe 50-C1. ArrowA1 shows the directionality of handle 60-C1 elevating; arrow A2 showsthe direction of a manual pull that is allowed when handle 60-C1 is inthe elevated position; arrow A3 shows the direction that chafe 50 movesalong strap 20, when the handle is elevated (A1) and being pulled (A2).A manual pull, per arrow A2, pulls chafe 50-C1 along strap 20, away fromthe connector and closer to the central region of strap 20. According,by a user manipulating handle 60-C1 (per arrows A1, A2, and A3), theuser can move adjustable closure device 101-C1 between a largecircumference configuration and a small circumference configuration.

Rotation of handle 60-C1 results in the rotation of central bar 54-C1(one and the same as the base of handle 60-C1, which changes the peakheight of its one-sided cam portion (FIGS. 6B-6D). When handle 60-C1 isin a down position (FIG. 6B) the peak height corresponds to arrow H1;when handle 60-C1 is in an elevated position (FIG. 6C), the peak heightcorresponds to arrow H2, which is lower than H1. “Height”, in thiscontext, refers to the distance between the peak of the one-sided camover a baseline defined by the bottom of outside bars of chafe 50-C1.These differences in height are reflected in the path of strap 20 (FIGS.6D-6E). The greater height H1 causes a change in the pathway of strap 20through the chafe 50-C1. When handle 60-C1 is in the down position, theincreased height H1 causes a corresponding steeper angle in the path ofstrap 20 and consequent higher frictional force between strap 20 andchafe 50-C1 as the strap passes through gaps 56-1 and 56-2 betweencenter bar 54-C1 and two outside bars 53-C11 and 53-C12. Thisheight-elevating feature increases the tension retaining capacity ofchafe 50-C1 when the handle is in the down configuration as compared toa reduced frictional configuration when the handle is elevated. Thelower height H2, when the handle is elevated, in contrast, allows easymovement of the strap through the chafe, allowing a change in the sizeof the adjustable region of the strap, and consequent change in thecircumference enclosed by the strap. Accordingly, this cooperativeaspect of the handle and the central bar of the chafe and the consequenteffect on the strap path through the chafe constitutes and embodiment ofa friction-lock.

FIGS. 7A-7F show views of an embodiment of an adjustable closure device101-C2 with a handle 60-C2 integrated with the central bar 54-C2 of achafe 50-C2, the central bar being a two-sided cam that acts as acomponent of friction-based strap lock. The “C2” designation refers toan embodiment that has a handle with a base, the base being integralwith a chafe central bar that is configured as a 2-sided cam, asdescribed below.

FIG. 7A is a face view of a chafe 50-C2 applicable to this embodiment.FIG. 7B is a side view showing the handle in a down position; FIG. 7C isa side view showing a handle 60-C2 in an elevated position. FIG. 7D is aside view showing handle 60-C1 in a down position, and further showingthe path of a strap 20 through the chafe. FIG. 7E is a side view ofshowing handle 60-C2 in an elevated position, and further showing thepath of a strap 20 through the chafe. FIGS. 7D-7E both show a side viewof a chafe 50-C2 and hinged handle 60-C1 and the path of a strap throughchafe 50-C2. In FIG. 7D, handle 60-C2 is in a down position; in FIG. 7E,the handle is in an elevated position. Chafe 50-C2 is applicable to bothunilaterally adjustable embodiments, such as this one, and tobilaterally-adjustable adjustable closure devices as also describedherein.

FIG. 7F is a side view of an embodiment of an adjustable closure devicewith a chafe having a central bar configured as a two sided cam thatacts as friction-based strap lock, and with a tool T attached to thebottom side of the handle. In this embodiment, tool T is a bottleopener, hereby applied to a bottle. A surface feature 56-B is shown onouter bar 53-1 that cooperates the bottle opener T to open a bottle.

Chafe 50-C2 includes two outer bars, a first outer bar 53-C21 (on theleft as shown), a second outer bar 53-C22 (on the right as shown), and acentral bar 54-C2, which includes a high friction surface of the cam, asindicated by the striated lines. The left side of chafe 50-C2 is alsothe side on which a connector (not shown) is positioned. The right sideof chafe 50-C2 is the central side of the chafe, the side which isproximate the central region of the strap (see FIGS. 1A-1B).

Chafe 50-C2 further includes a handle 60-C2. Handle 60-C2 includes ahandle base which, in this embodiment, is integral with central bar54-C4 (one and the same as), and which is configured a 2-sided cam. Ahinge 59 connects handle 60-C2 to central bar 54-C2 (also the base ofhandle 60-C2) and, accordingly, to chafe 50-C2, which allows the handleto rotate between a down position (as in FIGS. 7B and 7D) and anelevated position (as in FIGS. 7C and 7E). When handle 60-C2 is in adown position, its position is stabilized or retained by a retentionmechanism, exemplified by a pair of magnets M (labeled separately as Nand S) that are disposed on apposing sides of handle 60-C2 and chafe50-C2.

FIGS. 7D-7E are similar to FIGS. 7B-7D, respectively, except that FIGS.7D and 7E further show the path of strap 20 through chafe 50-C2. ArrowA1 shows the directionality of handle 60-C1 elevating; arrow A2 showsthe direction of a manual pull that is allowed when handle 60-C1 is inthe elevated position; arrow A3 shows the direction that chafe 50 movesalong strap 20, when the handle is elevated (A1) and being pulled (A2).A manual pull, per arrow A2, pulls chafe 50 along strap 20, away fromthe connector and closer to the central region of strap 20. According,by a user manipulating handle 60-C1 (per arrows A1, A2, and A3), theuser can move adjustable closure device 101-C2 between a largecircumference configuration and a small circumference configuration.

Rotation of handle 60-C2 results in the rotation of central bar 54-C2(one and the same as the base of handle 60-C2, which changes the peakheight of its one-sided cam portion (FIGS. 7B-7D). When handle 60-C2 isin a down position (FIG. 7B) the peak height corresponds to arrow H1;when handle 60-C2 is in an elevated position (FIG. 6C), the peak heightcorresponds to arrow H2, which is lower than H1. “Height”, in thiscontext, refers to the distance between the peak of the one-sided camover a baseline defined by the bottom of outside bars of chafe 50-C2.These differences in height are reflected in the path of strap 20 (FIGS.7D-7E). The greater height H1 causes a change in the pathway of strap 20through the chafe 50-C2. When handle 60-C2 is in the down position, theincreased height H1 causes a corresponding steeper angle in the path ofstrap 20 and consequent higher frictional force between strap 20 andchafe 50-C2 as the strap passes through gaps 56-1 and 56-2 betweencenter bar 54-C1 and two outside bars 53-C21 and 53-C22. Thisheight-elevating feature increases the tension retaining capacity ofchafe 50-C1 when the handle is in the down configuration as compared toa reduced frictional configuration when the handle is elevated. Thelower height H2, when the handle is elevated, in contrast, allows easymovement of the strap through the chafe, allowing a change in the sizeof the adjustable region of the strap, and consequent change in thecircumference enclosed by the strap. Accordingly, this cooperativeaspect of the handle and the central bar of the chafe and the consequenteffect on the strap path through the chafe constitutes and embodiment ofa friction-lock.

FIGS. 8A-8G show views of an embodiment of an adjustable closure device101-S with a two-part handle 64 that has a mechanism based on a spring65 that acts as friction-based strap lock. The “S” designation refersthe spring included in this embodiment. Inasmuch as FIGS. 8A-8G showonly a single chafe 50-S, these figures can represent also an aspect ofa bilateral adjustable closure device 102-S.

FIG. 8A is a face view of a chafe 50-S; FIG. 8B is a detailed view ofFIG. 8A, focusing on the area surrounding the spring (65-S) basedmechanism. Two-part handle 64 includes an outer handle 64-O, and aninner handle 64-I nested inside outer handle 64-O, and configured suchthat inner handle square pin 64-H is enabled to slide in outer handleslot 64-G. Outer handle 64-O is connected to chafe 50-S by hinges 59.Chafe 50-S includes a first outer bar 53-51, second outer bar 53-S2, andcentral bar 54-S.

FIG. 8C is a side view showing the two-part handle 64 of the chafe in adown position. FIG. 8D is a face showing the two-parts of the handle 64in a separated position, spring 64-S in an uncompressed configuration,and accordingly, in a locked configurations. FIG. 8E is a face view ofan embodiment showing the two-parts of handle 64 in a closed position,spring 65 in a compressed configuration, and accordingly, in an unlockedconfiguration. Also shown is the inner-directed high-friction end 64-Eof inner handle 64-I.

As shown in FIGS. 8F and 8G, inner handle high-friction end 64-Ecomprises a material having a high coefficient of friction against thematerial of strap 20 and is press-fit around a square pin 64-H such thatit is rotationally fixed about square pin 64-H and able to slide withthe inner handle. The inner handle assembly has a default configurationfriction lock that is spring-based and biased toward a friction lockingengagement with strap 20. The inner handle assembly is disengaged fromthis configuration and pulled into a second configuration wherein thereis no interference of strap 20 when an operator grasps the handle andovercomes the spring bias. The operator can then slide the chafe when itis in a low friction configuration and when the desired adjustment hasbeen made, a user can let go of the handle and the fiction lockingmechanism of the inner handle returns to its default lockingconfiguration.

FIG. 8F is a side view of chafe 50-S showing two-part of the handle 64in down position, the two parts of the handle 64 in a separatedposition, and further showing the path of strap 20 through chafe 50-S.FIG. 8G is a side view of chafe 50-S showing two-part handle 64 in anelevated position, the two parts of the handle in a closed position, andfurther showing the path of strap 20 through the connector and thechafe.

The two parts of handle 64 (outer part 64-O and inner part 64-I) canmove between a separated configuration and locked (FIG. 8D) and a closedand unlocked configuration (FIG. 8E), as controlled by the state(uncompressed or compressed) of spring 65, which itself, is controlledby a user manipulating the two parts of handle 64.

The configuration shown in FIG. 8D wherein the two parts of the handleare separated, is a default state locked state of chafe 50-S. In thisconfiguration, handle gap 67 is open, and handle strap gap 68 isminimal. The minimal opening of strap gap 68 maximizes frictionalresistance of strap 20 through the gap, thereby forming a friction lockmechanism. FIG. 8D also shows a boss feature 64-Q that is built into theouter handle as a counterforce surface on each side for compressionspring 65 within the inner handle.

FIG. 8E (in contrast to FIG. 8D) shows a configuration wherein the twoparts of the handle are closed. This is an active, user-driven, unlockedstate, one that results from a user squeezing the two parts of thehandle together. In this state, handle gap 67 is closed, and handlestrap gap 68 is open. The maximal opening of strap gap 68 minimizesfrictional resistance of strap 20 through the gap, thereby unlocking thedefault locked state (as in FIG. 8D). FIG. 8E also shows that the squarepin 64-H has slid into slot 64-G and spring 65 has compressed while theinner handle has also slide relative to boss feature 64-Q of the outerhandle.

FIGS. 8F and 8G (as in FIGS. 8D and 8E) show chafe 50-S in an unlockedstate and a locked state, respectively, and further show the path ofstrap 20 through chafe 50-S, and the role of the end 64-E of innerhandle 64-I in locking and unlocking the chafe Additionally, FIG. 8Dshows two part handle 64 in a down position, and FIG. 8E shows two parthandle 64 in an elevated position.

The locked state of chafe 50-S (FIG. 8F) is evident by handle gap 67being open and strap gap 68 being closed, thereby creating a frictionlock at the nexus of the inner end 68 (of inner handle 64-I) and centralbar 54-S of chafe 50S, with strap 20 trapped therebetween. The unlockedstate of chafe 50-S (FIG. 8G) is evident by handle gap 67 being closedand strap gap 68 being open, thereby allowing strap 20 to move throughthe strap gap freely (or with minimal friction).

Although FIG. 8F shows handle 64 of chafe 50S in a down position andshows chafe 50S in locked configuration and FIG. 8G shows handle 64 ofchafe 50S in an elevated position and shows chafe 50S in an unlockedconfiguration, the locked-unlocked status of the chafe is independent ofthe state of elevation (down or elevated).

FIGS. 9A-9E show views of an embodiment of an adjustable closure device101-CH having a hinged handle 60-CH having base 54-CH configured as anintegrated cam, the cam of the handle being positioned proximate thecentral bar 54-CH of a chafe 50-CH, the cam of the handle base and thecentral bar being collectively configured to act as friction-based straplock. The “CH” designation refers the base of the handle beingconfigured as a cam. Inasmuch as FIGS. 9A-9E show only a single chafe50-CH, these figures can represent also an aspect of a bilateraladjustable closure device 102-CH.

FIG. 9A is a face view of a chafe 50-CH and hinged handle 60-CH of anembodiment of an adjustable closure device 101-CH having a handle with abase 60-BC configured as an integrated cam that is positioned proximatethe central bar 54-CH of a chafe, wherein handle base 60-BC and centralbar 54-CH are collectively configured to act as friction-based straplock.

FIG. 9B is a side view of a chafe 50-CH and hinged handle 60-CH of FIG.9A, with the handle in a down position. FIG. 9C is a side view of chafe50-CH and hinged handle 60-CH of FIG. 9A, with hinged handle 60-CH in anelevated position.

FIG. 9D is a side view of a chafe 50-CH and hinged handle 60-CH with thehandle in a down position (as in FIG. 9B), but further showing the pathof a strap 20 through the chafe. FIG. 9E is a side view of chafe 50-CHand hinged handle 60-CH with the handle in an elevated position (as inFIG. 9C), but further showing the path of a strap 20 through the chafe.

When handle 60-CH is in a down position (FIG. 9D), its position isstabilized or retained by a retention mechanism, exemplified here by apair mateable of snap-fit components SF that are disposed on apposingsides of handle 60-CH and chafe 50-CH.

FIGS. 9D and 9E show the cooperation of cam base 60-BC and central bar54-CH in creating a friction lock mechanism that can either allow ordisallow movement of strap 20 through chafe 50-CH. FIG. 9D shows chafe50-CH in a locked position. With handle 60-CH in a down position, cam60-BC of the handle and central bar 54-CH of chafe 50-CH meet at a nexusthat applies pressure to strap 20 as it passes through an adjustable gap54G.

FIG. 9E shows chafe 50-CH in a locked position. With handle 60-CH in anelevated position, cam 60-BC of the handle and central bar 54-CH ofchafe 50-CH are spaced apart such that strap 20 as it passes through anadjustable gap 54G with minimal friction between the cam base of thehandle and the central bar. Arrow A1 shows directionality of handle60-CH elevating; arrow A2 shows the direction of a manual pull that isallowed when handle 60-CH is in the elevated position; arrow A3 showsthe direction that chafe 50-CH moves along strap 20, when the handle iselevated (A1) and being pulled (A2). A manual pull, per arrow A2, pullschafe 50-CH along strap 20, away from the connector and closer to thecentral region of strap 20.

Accordingly, these cooperating aspects of handle 60-CH (including itsrotatability and its cam base) and central bar 54 of chafe 50-CH,collectively form a friction locking mechanism that controls movement ofstrap 20 through the chafe, the rotation of handle 60-CH being under thecontrol of a user. Further, by a user manipulating handle 60-CH (perarrows A1, A2, and A3), the user can move adjustable closure device101-CH between a large circumference configuration and a smallcircumference configuration.

FIGS. 10A-10C show views of a method of connecting the connectors of anembodiment of an adjustable closure device 100 (broadly representing allembodiments of an adjustable closure device provided herein) engagingthe handles 60 of chafes 50, and drawing the handles apart to tightenstraps 20. FIG. 10A shows the hands of a user 10 engaging the twoconnectors 40 of the two ends of a strap 20, and preparing to connectthem. FIG. 10B shows hands of a user 10 engaging handles 60 of chafes50, and elevating them, preparing to draw the chafes apart. FIG. 10Cshows the hands of a user 10 having now pulled chafes 50 apart, andtightening the two ends strap 20.

Adjustable closure device 100, chafe 50, handles 60 of the chafes,connectors 40, and strap 20 are all intended to generically representall embodiments of adjustable closure devices and their component parts,as described, and as depicted herein. The depicted embodiment ofadjustable device 100 shows a bilaterally adjustable closure device, butapplies to a unilaterally adjustable closure device as well, with themodification of the user grasping a non-adjustable strap or an articleto which the adjustable strap is connected.

FIGS. 11A-11M show various applications of embodiments of an adjustableclosure device 100 as applied to various products.

FIG. 11A shows application of an embodiment of an adjustable closuredevice 100 to a full sized backpack.

FIG. 11B shows application of an embodiment of an adjustable closuredevice 100 to a day backpack.

FIG. 11C shows application of an embodiment of an adjustable closuredevice 100 to a protective vest.

FIG. 11D shows application of an embodiment of an adjustable closuredevice 100 to motorcycle full body suit.

FIG. 11E shows application of an embodiment of an adjustable closuredevice 100 to protective knee pads.

FIG. 11F shows application of an embodiment of an adjustable closuredevice 100 to a pair of protective pants.

FIG. 11G shows application of an embodiment of an adjustable closuredevice 100 to an ankle brace.

FIG. 11H shows application of an embodiment of an adjustable closuredevice 100 to a prosthetic socket.

FIG. 11I shows application of an embodiment of an adjustable closuredevice 100 to a back brace.

FIG. 11J shows application of an embodiment of an adjustable closuredevice 100 to a knee brace.

FIG. 11K shows application of an embodiment of an adjustable closuredevice 100 to a post-operative leg brace.

FIG. 11L shows application of an embodiment of an adjustable closuredevice 100 as a built-in belt for a pair of pants.

FIG. 11M shows application of an embodiment of an adjustable closuredevice 100 as a belt for a pair of pants.

Embodiment List

Multiple embodiments of an adjustable closure device, as disclosedherein, are listed below. This is a non-limiting list. The scope ofprovided invention includes embodiments in which any feature describedor depicted in the context of any one embodiment can be appropriatelycombined with another embodiment.

A Unilaterally-Adjustable Closure Device

1. An adjustable closure device comprising:

a strap comprising at least a first end-region, and a central region;

a connector attached to a terminus of the at least first strapend-region wherein the connector comprises a strap pivot bar aroundwhich the strap reverses direction;

a chafe on the strap behind connector, the chafe comprising:

three parallel bars, a first outer bar, a central bar, and a secondouter bar, wherein the first outer bar is proximate the first end-regionof the strap, the second outer bar is proximate the central-region ofthe strap, and wherein a first strap pass-through gap is disposedbetween the central bar and the first outer bar, and a second strappass-through gap is disposed between the central bar and second outerbar; andwherein the strap end-region comprises a strap path comprising segmentsarranged, directionally from the strap's central region toward a strapterminus at the pivot bar of connector, to (a) pass through the firstchafe gap, (b) pass by the central bar of the chafe, (c) through thesecond chafe gap, (d) around a strap pivot bar of connector, (e) returntoward chafe and to loop around the central bar of the chafe andterminate thereto, andwherein an adjustable length region of the strap comprises an adjustablespan between the chafe's central bar and the connector attached to it;anda handle connected to the chafe, wherein the handle is ergonomicallyconfigured to allow a user to pull the chafe to which it is connectedalong the strap, away from connector, andwherein, when the chafe is allowed to move with respect to the strap,the strap can move between two configurations, wherein, by comparison, afirst configuration comprises a large strap circumference and a secondconfiguration comprises a small strap circumference.

2. The adjustable closure device of embodiment 1, wherein the centralregion of the strap is continuous with a second end region of the strap.

3. The adjustable closure device of embodiment 1, wherein the centralregion of the strap is wherein the central region of the strap isattached to an article.

4. The adjustable closure device of embodiment 1, wherein the connectoris attached to the terminus of the first region is mateable with asecond connector attached to a second terminus of the strap.

5. The adjustable closure device of embodiment 4, wherein the connectorat the terminus of the first region is mateable with a second connectorattached to a second terminus of the strap.

6. The adjustable closure device of embodiment 5, wherein the secondconnector attached to the second terminus of the strap comprises asecond adjustable length region.

7. The adjustable closure device of embodiment 5, wherein secondconnector attached to a separate article.

8. The adjustable closure device of embodiment 1 wherein the chafecomprises a connector-side and a central-side, and wherein the handle isconnected to the chafe at a mounting site proximate the central bar ofthe chafe, and wherein the mounting site comprises a handle hinge.

9. The adjustable closure device of embodiment 8 wherein the handle ofeach chafe can rotate at the hinge between a down position and anelevated position, wherein the elevated position elevates the handle ona central side of the chafe.

10. The adjustable closure device of embodiment 9 wherein the chafecomprises a handle-down retention mechanism.

11. The adjustable closure device of embodiment 1 wherein each chafecomprises a strap friction-based locking mechanism, which, when locked,disallows strap slippage through the chafe, and which, when unlocked,allows strap slippage through the chafe.

12. The chafe of embodiment 11, wherein the adjustable length region ofthe strap comprises two overlapping sections of the strap, a firstsection proximate the central region of the strap and a second sectionproximate the connector, and wherein the strap friction-based lockingmechanism is positioned to engage on the adjustable length region of thestrap.

13. The adjustable closure device of embodiment 1 wherein the strapfriction-locking mechanism comprises a configuration wherein a base ofthe handle and the central bar of the chafe are integrated together, andwherein the central bar is configured as a one-sided cam.

14. The adjustable closure device of embodiment 13 wherein strapfriction-locking mechanism comprises a configuration wherein the handleand the central bar of the chafe are integrated together, and whereinthe central bar is configured as a one-sided cam.

15. The adjustable closure device of embodiment 14 wherein when theone-sided cam is rotated such that the cam has a maximal peak heightover the side bars of the chafe, the chafe is in a locked position, andwherein when the one-sided cam is rotated such that the one side camdoes not rise over a minimal circumference of the central bar, the chafeis in an unlocked position.

16. The adjustable closure device of embodiment 1 wherein the strapfriction-locking mechanism comprises a configuration wherein a base ofthe handle and the central bar of the chafe are integrated together, andwherein the central bar is configured as a two-sided cam.

17. The adjustable closure device of embodiment 16 wherein the strapfriction-locking mechanism comprises a configuration wherein the handleand the central bar of the chafe are integrated together, and whereinthe central bar is configured as a two-sided cam.

18. The adjustable closure device of embodiment 17 wherein when thetwo-sided cam is rotated such that the cam has a maximal peak heightover the side bars of the chafe, the chafe is in a locked position, andwherein when the two-sided cam is rotated such that the two-sided camdoes not rise over a minimal circumference of the central bar, the chafeis in an unlocked position.

19. The adjustable closure device of embodiment 1 wherein the chafehandle comprises two parts, an outer handle and an inner handle, whereinthe inner handle is nested within the outer handle and connected by ahinge thereto, wherein the inner handle and the outer handle areadjustable with respect to each other between the unlocked configurationand the locked configuration, and wherein the unlocked configuration isstabilized by a spring between the inner and outer handle that isuncompressed, and wherein the locked configuration is one wherein thespring is compressed.

20. The adjustable closure device of embodiment 1 wherein the handlecomprises a cam-configured base that is proximate the central bar of thechafe but separated therefrom by a strap gap through which the strappasses, and wherein when the handle is in a down position the cam aspectof the base minimizes the strap gap, forming a locked configuration, andwherein when the handle is in an elevated position the cam aspect of thebase maximizes the strap gap, forming an unlocked configuration.

A Bilaterally-Adjustable Closure Device

21. An adjustable closure device comprising:

-   -   a strap comprising a first end-region, a central region, and a        second end-region;    -   two mutually connectable connectors, a first connector and        second connector, wherein each connector is attached is to a        terminus of one of the strap end-regions wherein each connector        comprises a strap pivot bar around which the strap reverses        direction;    -   two chafes, each chafe mounted on the strap behind the proximate        connector, each chafe comprising:        -   three parallel bars, a first outer bar, a central bar, and a            second outer bar, wherein the first outer bar is proximate            the first end-region of the strap, the second outer bar is            proximate the central-region of the strap, and wherein a            first strap pass-through gap is disposed between the central            bar and the first outer bar, and a second strap pass-through            gap is disposed between the central bar and second outer            bar; and    -   wherein each strap end-region comprises a strap path comprising        segments arranged, directionally from the strap's central region        toward a strap terminus at the pivot bar of connector, to (a)        pass through the first chafe gap, (b) pass by the central bar of        the chafe, (c) through the second chafe gap, (d) around a pulley        pivot of connector, (e) return toward chafe and to loop around        the central bar of the chafe and terminate thereto, and    -   wherein an adjustable length region of the strap comprises an        adjustable span between the chafe's central bar and the        connector attached to it; and    -   a handle connected to each chafe, wherein the handle is        ergonomically configured to allow a user to pull the chafe to        which it is connected along the strap, away from connector, and    -   wherein, when each chafe is allowed to move with respect to the        strap, the strap can move between two configurations, wherein,        by comparison, a first configuration comprises a large strap        circumference and a second configuration comprises a small strap        circumference.

22. The adjustable closure device of embodiment 1 wherein each chafecomprises a connector-side and a central-side, and wherein the handle ofeach chafe is connected to the chafe at a mounting site proximate thecentral bar of the chafe, and wherein the mounting site comprises ahandle hinge.

23. The adjustable closure device of embodiment 22 wherein the handle ofeach chafe can rotate at the hinge between a down position and anelevated position, wherein the elevated position elevates the handle onthe central side of the chafe.

24. The adjustable closure device of embodiment 23 wherein each chafecomprises a handle-down retention mechanism.

25. The adjustable closure device of embodiment 1 wherein each chafecomprises a strap friction-based locking mechanism, which, when locked,disallows strap slippage through the chafe, and which, when unlocked,allows strap slippage through the chafe.

26. The chafe of embodiment 25, wherein the adjustable length region ofeach strap comprises two overlapping sections of the strap, a firstsection proximate the central region of the strap and a second sectionproximate the connector, and wherein the strap friction-based lockingmechanism is positioned to engage on the adjustable length region of thestrap.

27. The adjustable closure device of embodiment 1 wherein the strapfriction-locking mechanism comprises a configuration wherein a base ofthe handle and the central bar of each chafe are integrated together,and wherein the central bar is configured as a one-sided cam.

28. The adjustable closure device of embodiment 27 wherein when theone-sided cam is rotated such that the cam has a maximal peak heightover the side bars of the chafe, the chafe is in a locked position, andwherein when the one-sided cam is rotated such that the one side camdoes not rise over a minimal circumference of the central bar, the chafeis in an unlocked position.

29. The adjustable closure device of embodiment 1 wherein the strapfriction-locking mechanism comprises a configuration wherein a base ofthe handle and the central bar of each chafe are integrated together,and wherein the central bar is configured as a two-sided cam.

30. The adjustable closure device of embodiment 29 wherein strapfriction-locking mechanism comprises a configuration wherein the handleand the central bar of the chafe are integrated together, and whereinthe central bar is configured as a two-sided cam.

31. The adjustable closure device of embodiment 30 wherein when thetwo-sided cam is rotated such that the cam has a maximal peak heightover the side bars of the chafe, the chafe is in a locked position, andwherein when the two-sided cam is rotated such that the two-sided camdoes not rise over a minimal circumference of the central bar, the chafeis in an unlocked position.

32. The adjustable closure device of embodiment 1 wherein each chafehandle comprises two parts, an outer handle and an inner handle, whereinthe inner handle is nested within the outer handle and connected by ahinge thereto, wherein the inner handle and the outer handle areadjustable with respect to each other between the unlocked configurationand the locked configuration, and wherein the unlocked configuration isstabilized by a spring between the inner and outer handle that isuncompressed, and wherein the locked configuration is one wherein thespring is compressed.

33. The adjustable closure device of embodiment 1 wherein each handlecomprises a cam-configured base that is proximate the central bar of thechafe but separated therefrom by a strap gap through which the strappasses, and wherein when the handle is in a down position the cam aspectof the base minimizes the strap gap, forming a locked configuration, andwherein when the handle is in an elevated position the cam aspect of thebase maximizes the strap gap, forming an unlocked configuration.

A Unilaterally-Adjustable Closure Device with a Pulley Arrangement

34. An adjustable closure device comprising:

-   -   a strap comprising a first end-region, and a central region;    -   a connectable connector, wherein the connector is attached to a        terminus of the strap end-region, and wherein the connector        comprises a first strap pivot bar and a second pivot bar,        internal to the first strap pivot bar;        -   a chafe mounted at the end of at the strap end-region, the            chafe comprising:            -   three parallel bars, a first outer bar, a central bar,                and a second outer bar, wherein the first outer bar is                proximate the first end-region of the strap, the second                outer bar is proximate the central-region of the strap,                and wherein a first strap pass-through gap is disposed                between the central bar and the first outer bar, and a                second strap pass-through gap is disposed between the                central bar and second outer bar; and        -   wherein the strap end-region comprises a strap path            comprising segments arranged, directionally from the strap's            central region and toward the strap terminus, to (a) pass            through the first chafe gap, (b) pass by the central chafe            bar, (c) pass through the second chafe gap, (d) pass toward            the connector, to loop around the second pivot bar and            reversing direction, (e) returning toward the chafe to pass            around the central bar of the chafe and reversing direction,            and finally (f) returning toward the connector, to loop            around the first pivot bar of the connector and there to            terminate, and        -   wherein an adjustable length region of the strap comprises            an adjustable span between the chafe and the connector; and        -   a handle connected to the chafe, wherein the handle is            ergonomically configured to allow a user to pull each chafe            along the strap, away from the connector, and        -   wherein, when the chafe is allowed to move with respect to            the strap and wherein the strap can move between two            configurations, wherein, by comparison, a first            configuration comprises a large strap circumference and a            second configuration comprises a small strap circumference.

35. The adjustable closure device of embodiment 34 wherein the strappath comprises a pulley arrangement in which the strap reversesdirection twice, thereby providing mechanical advantage upon pulling thechafe with respect to the strap, wherein the force required to shortenthe adjustable length region of strap is less than that which would berequired absent the pulley arrangement to move the device from the firstconfiguration to the second configuration.

36. The adjustable closure device of embodiment 35, wherein themechanical advantage is about 2:1.

37. The adjustable closure device of embodiment 35, wherein the centralregion of the strap is continuous with a second end region of the strap.

38. The adjustable closure device of embodiment 35, wherein theconnector is mateable with a second connector attached to a secondterminus of the strap.

39. The adjustable closure device of embodiment 38, wherein the strapattached to the second terminus of the strap comprises a secondadjustable length region.

40. The adjustable closure device of embodiment 38, wherein secondconnector attached to a separate article.

41. The adjustable closure device of embodiment 35, wherein the centralregion of the strap is attached to an article.

42. The adjustable closure device of embodiment 34 wherein the chafecomprises a connector-side and a central-side, and wherein the handle isconnected to the chafe at a mounting site proximate the central bar ofthe chafe, and wherein the mounting site comprises a hinge supportingthe handle.

43. The adjustable closure device of embodiment 42 wherein the handle ofthe chafe can rotate at the hinge between a down position and anelevated position, wherein the elevated position elevates the handle onthe central side of the chafe.

44. The adjustable closure device of embodiment 43 wherein the chafecomprises a handle-down retention mechanism.

45. The adjustable closure device of embodiment 34 wherein each chafecomprises a strap friction-locking mechanism, which, when in a lockedposition, disallows strap slippage through the chafe, and which, when inan unlocked position, allows strap slippage through the chafe.

46. The chafe of embodiment 45, wherein the adjustable length region ofthe strap comprises two overlapping sections of the strap, a firstsection proximate the central region of the strap and a second sectionproximate the connector, and wherein the strap friction-based lockingmechanism is positioned to engage on the adjustable length region of thestrap.

47. The adjustable closure device of embodiment 34 wherein the strapfriction-locking mechanism comprises a configuration wherein a base ofthe handle and the central bar of the chafe are integrated together, andwherein the central bar is configured as a one-sided cam.

48. The adjustable closure device of embodiment 47 wherein when theone-sided cam is rotated such that the cam has a maximal peak heightover the side bars of the chafe, the chafe is in a locked position, andwherein when the one-sided cam is rotated such that the one side camdoes not rise over a minimal circumference of the central bar, the chafeis in an unlocked position.

49. The adjustable closure device of embodiment 34 wherein the strapfriction-locking mechanism comprises a configuration wherein a base ofthe handle and the central bar of the chafe are integrated together, andwherein the central bar is configured as a two-sided cam.

50. The adjustable closure device of embodiment 49 wherein when thetwo-sided cam is rotated such that the cam has a maximal peak heightover the side bars of the chafe, the chafe is in a locked position, andwherein when the two-sided cam is rotated such that the two-sided camdoes not rise over a minimal circumference of the central bar, the chafeis in an unlocked position.

51. The adjustable closure device of embodiment 34 wherein the chafehandle comprises two parts, an outer handle and an inner handle, whereinthe inner handle is nested within the outer handle and connected by ahinge thereto, wherein the inner handle and the outer handle areadjustable with respect to each other such that the two handle parts canbe spaced apart or aligned together, wherein when the two handle partsare spaced apart, the chafe is in a locked position, and when two handleparts are aligned together, the chafe is in an unlocked position.

52. The adjustable closure device of embodiment 51 further comprising aspring that when in an uncompressed state, maintains the first andsecond handle parts in the spaced apart configuration such that thechafe is in the unlocked position, and when the spring is in acompressed state, the first and second handle parts are alignedtogether, and the chafe is an the locked configuration.

53. The adjustable closure device of embodiment 34 wherein the handlecomprises a cam-configured base that is proximate the central bar of thechafe but separated therefrom by a strap gap through which the strappath passes.

54. The adjustable closure device of embodiment 53 wherein when thehandle is in a down position the cam aspect of the base minimizes thestrap gap, forming a locked configuration, and wherein when the handleis in an elevated position, the cam aspect of the base maximizes thestrap gap, forming an unlocked configuration.

A Bilaterally-Adjustable Closure Device with a Pulley Arrangement

55. An adjustable closure device comprising:

-   -   a strap comprising a first end-region, a central region, and a        second end-region;    -   two mutually connectable connectors, a first connector and        second connector, wherein each connector is attached is to a        terminus of one of the strap end-regions wherein each connector        comprises a first strap pivot bar and second pivot bar, internal        to the first strap pivot bar;        -   two chafes, one mounted at the end of at each strap            end-region, each chafe comprising:            -   three parallel bars, a first outer bar, a central bar,                and a second outer bar, wherein the first outer bar is                proximate the first end-region of the strap, the second                outer bar is proximate the central-region of the strap,                and wherein a first strap pass-through gap is disposed                between the central bar and the first outer bar, and a                second strap pass-through gap is disposed between the                central bar and second outer bar; and        -   wherein each strap end-region comprises a strap path            comprising segments arranged, directionally from the strap's            central region and toward the strap terminus, to (a) pass            through the first chafe gap, (b) pass by the central chafe            bar, (c) pass through the second chafe gap, (d) pass toward            the connector, to loop around the second pivot bar and            reversing direction, (e) returning toward the chafe to pass            around the central bar of the chafe and reversing direction,            and finally (f) returning toward the connector, to loop            around the first pivot bar of the connector and terminate            thereto, and        -   wherein an adjustable length region of the strap comprises            an adjustable span between the each of the two chafes, the            two chafes connected by the connectors; and        -   a handle connected to each chafe, wherein the handle is            ergonomically configured to allow a user to pull each chafe            along the strap, away from the first connector, and        -   wherein, when each chafe is allowed to move with respect to            the strap and wherein the strap can move between two            configurations, wherein, by comparison, a first            configuration comprises a large strap circumference and a            second configuration comprises a small strap circumference.

56. The adjustable closure device of embodiment 55 wherein the strappath comprises a pulley arrangement in which the strap reversesdirection twice, thereby providing mechanical advantage upon pulling thechafe with respect to the strap, wherein the force required to shortenthe adjustable length region of strap is less than that which would berequired absent the pulley arrangement to move the device from the firstconfiguration to the second configuration.

57. The adjustable closure device of embodiment 56, wherein themechanical advantage is about 2:1.

58. The adjustable closure device of embodiment 55 wherein each chafecomprises a connector-side and a central-side, and wherein the handle isconnected to the chafe at a mounting site proximate the central bar ofthe chafe, and wherein the mounting site comprises a hinge supportingthe handle.

59. The adjustable closure device of embodiment 58 wherein the handle ofthe chafe can rotate at the hinge between a down position and anelevated position, wherein the elevated position elevates the handle onthe central side of the chafe.

60. The adjustable closure device of embodiment 59 wherein the chafecomprises a handle-down retention mechanism.

61. The adjustable closure device of embodiment 55 wherein each chafecomprises a strap friction-locking mechanism, which, when in a lockedposition, disallows strap slippage through the chafe, and which, when inan unlocked position, allows strap slippage through the chafe.

62. The chafe of embodiment 61, wherein the adjustable length region ofthe strap comprises two overlapping sections of the strap, a firstsection proximate the central region of the strap and a second sectionproximate the connector, and wherein the strap friction-based lockingmechanism is positioned to engage on the adjustable length region of thestrap.

63. The adjustable closure device of embodiment 61 wherein the strapfriction-locking mechanism comprises a configuration wherein a base ofthe handle and the central bar of the chafe are integrated together, andwherein the central bar is configured as a one-sided cam.

64. The adjustable closure device of embodiment 63 wherein when theone-sided cam is rotated such that the cam has a maximal peak heightover the side bars of the chafe, the chafe is in a locked position, andwherein when the one-sided cam is rotated such that the one side camdoes not rise over a minimal circumference of the central bar, the chafeis in an unlocked position.

65. The adjustable closure device of embodiment 61 wherein the strapfriction-locking mechanism comprises a configuration wherein a base ofthe handle and the central bar of the chafe are integrated together, andwherein the central bar is configured as a two-sided cam.

66. The adjustable closure device of embodiment 65 wherein when thetwo-sided cam is rotated such that the cam has a maximal peak heightover the side bars of the chafe, the chafe is in a locked position, andwherein when the two-sided cam is rotated such that the two-sided camdoes not rise over a minimal circumference of the central bar, the chafeis in an unlocked position.

67. The adjustable closure device of embodiment 61 wherein each chafehandle comprises two parts, an outer handle and an inner handle, whereinthe inner handle is nested within the outer handle and connected by ahinge thereto, wherein the inner handle and the outer handle areadjustable with respect to each other such that the two handle parts canbe spaced apart or aligned together, wherein when the two handle partsare spaced apart, the chafe is in a locked position, and when two handleparts are aligned together, the chafe is in an unlocked position.

68. The adjustable closure device of embodiment 67 further comprising aspring that when in an uncompressed state, maintains the first andsecond handle parts in the spaced apart configuration such that thechafe is in the unlocked position, and when the spring is in acompressed state, the first and second handle parts are alignedtogether, and the chafe is an the locked configuration.

69. The adjustable closure device of embodiment 61 wherein each handlecomprises a cam-configured base that is proximate the central bar of thechafe but separated therefrom by a strap gap through which the strappath passes.

70. The adjustable closure device of embodiment 69 wherein when thehandle is in a down position the cam aspect of the base minimizes thestrap gap, forming a locked configuration, and wherein when the handleis in an elevated position, the cam aspect of the base maximizes thestrap gap, forming an unlocked configuration.

What is claimed is:
 1. An adjustable closure device comprising: a strapcomprising at least a first end-region, and a central region; aconnector attached to a terminus of the at least first strap end-regionwherein the connector comprises a strap pivot bar around which the strapreverses direction; a chafe on the strap behind the connector, the chafecomprising: three parallel bars, a first outer bar, a central bar, and asecond outer bar, wherein the first outer bar is proximate the firstend-region of the strap, the second outer bar is proximate thecentral-region of the strap, and wherein a first strap pass-through gapis disposed between the central bar and the first outer bar, and asecond strap pass-through gap is disposed between the central bar andsecond outer bar; and wherein the strap end-region comprises a strappath comprising segments arranged, directionally from the central regionof the strap toward a strap terminus at the pivot bar of the connector,to (a) pass through the first chafe gap, (b) pass by the central bar ofthe chafe, (c) through the second chafe gap, (d) around the strap pivotbar of the connector, (e) return toward the chafe and to loop around thecentral bar of the chafe and terminate thereto, and wherein anadjustable length region of the strap comprises an adjustable spanbetween the central bar of the chafe and the connector attached to it;and a handle connected to the chafe, wherein the handle is configured toallow a user to pull the chafe to which it is connected along the strap,away from the connector, and wherein, when the chafe is allowed to movewith respect to the strap, the strap can move between first and secondconfigurations, wherein in the first configuration the strap has a largestrap circumference and in the second configuration the strap has asmall strap circumference.
 2. The adjustable closure device of claim 1,wherein the central region of the strap is continuous with a second endregion of the strap.
 3. The adjustable closure device of claim 1,wherein the central region of the strap is attached to an article. 4.The adjustable closure device of claim 1, wherein the connector attachedto the terminus of the first region is mateable with a second connectorattached to a second terminus of the strap.
 5. The adjustable closuredevice of claim 4, wherein the connector at the terminus of the firstregion is mateable with a second connector attached to a second terminusof the strap.
 6. The adjustable closure device of claim 5, wherein thesecond connector attached to the second terminus of the strap comprisesa second adjustable length region.
 7. The adjustable closure device ofclaim 5, wherein second connector is attached to a separate article. 8.The adjustable closure device of claim 1, wherein the chafe comprises aconnector-side and a central-side, and wherein the handle is connectedto the chafe at a mounting site proximate the central bar of the chafe,and wherein the mounting site comprises a handle hinge.
 9. Theadjustable closure device of claim 8, wherein the handle of the chafecan rotate at the hinge between a down position and an elevatedposition, wherein the elevated position elevates the handle on a centralside of the chafe.
 10. The adjustable closure device of claim 9, whereinthe chafe comprises a handle-down retention mechanism.
 11. Theadjustable closure device of claim 1, wherein the chafe comprises astrap friction-based locking mechanism, which, when locked, disallowsstrap slippage through the chafe, and which, when unlocked, allows strapslippage through the chafe.
 12. The adjustable closure device of claim11, wherein the adjustable length region of the strap comprises twooverlapping sections of the strap, a first section proximate the centralregion of the strap and a second section proximate the connector, andwherein the strap friction-based locking mechanism is positioned toengage on the adjustable length region of the strap.
 13. The adjustableclosure device of claim 11, wherein the strap friction-locking mechanismcomprises a configuration wherein a base of the handle and the centralbar of the chafe are integrated together, and wherein the central bar isconfigured as a one-sided cam.
 14. The adjustable closure device ofclaim 13, wherein strap friction-locking mechanism comprises aconfiguration wherein the handle and the central bar of the chafe areintegrated together, and wherein the central bar is configured as aone-sided cam.
 15. The adjustable closure device of claim 14, whereinwhen the one-sided cam is rotated such that the cam has a maximal peakheight over the side bars of the chafe, the chafe is in a lockedposition, and wherein when the one-sided cam is rotated such that theone-sided cam does not rise over a minimal circumference of the centralbar, the chafe is in an unlocked position.
 16. The adjustable closuredevice of claim 1, wherein the chafe comprises a configuration wherein aportion of the handle and the central bar of the chafe are integratedtogether, and wherein the central bar is configured as a two-sided cam.17. The adjustable closure device of claim 16, wherein when thetwo-sided cam is rotated such that the cam has a maximal peak heightover the side bars of the chafe, the chafe is in a locked position, andwherein when the two-sided cam is rotated such that the two-sided camdoes not rise over a minimal circumference of the central bar, the chafeis in an unlocked position.
 18. The adjustable closure device of claim1, wherein the chafe handle comprises two parts, an outer handle and aninner handle, wherein the inner handle is nested within the outer handleand connected by a hinge thereto, wherein the inner handle and the outerhandle are adjustable with respect to each other between an unlockedconfiguration and a locked configuration, and wherein the unlockedconfiguration is stabilized by a spring between the inner and outerhandle that is uncompressed, and wherein the locked configuration is onewherein the spring is compressed.
 19. The adjustable closure device ofclaim 1, wherein the handle comprises a cam-configured base that isproximate the central bar of the chafe but separated therefrom by astrap gap through which the strap passes, and wherein when the handle isin a down position the cam aspect of the base minimizes the strap gap,forming a locked configuration, and wherein when the handle is in anelevated position the cam aspect of the base maximizes the strap gap,forming an unlocked configuration.
 20. An adjustable closure devicecomprising: a strap comprising a first end-region, a central region, anda second end-region; two mutually connectable connectors, wherein eachconnector is attached to a terminus of one of the strap end-regionswherein each connector comprises a strap pivot bar around which thestrap reverses direction; two chafes, each one of the two chafes mountedon the strap behind the one of the two connectors most proximate to oneof two chafes, each one of the two chafes comprising: three parallelbars, a first outer bar, a central bar, and a second outer bar, whereinthe first outer bar is proximate the first end-region of the strap, thesecond outer bar is proximate the central-region of the strap, andwherein a first strap pass-through gap is disposed between the centralbar and the first outer bar, and a second strap pass-through gap isdisposed between the central bar and second outer bar; and wherein eachstrap end-region comprises a strap path comprising segments arranged,directionally from the central region of the strap toward a strapterminus at the pivot bar of the connector, to (a) pass through thefirst chafe gap, (b) pass by the central bar of the chafe, (c) throughthe second chafe gap, (d) around a pulley pivot of the respectiveconnector, (e) return toward the chafe and to loop around the centralbar of the chafe and terminate thereto, and wherein an adjustable lengthregion of the strap comprises an adjustable span between the chafe'scentral bar and the connector attached to it; and a handle connected toeach chafe, wherein the handle is ergonomically configured to allow auser to pull the chafe to which it is connected along the strap, awayfrom connector, and wherein, when each chafe is allowed to move withrespect to the strap, the strap can move between first and secondconfigurations, wherein the first configuration comprises a large strapcircumference and the second configuration comprises a small strapcircumference.
 21. The adjustable closure device of claim 20 whereineach chafe comprises a connector-side and a central-side, and whereinthe handle of each chafe is connected to the chafe at a mounting siteproximate the central bar of the chafe, and wherein the mounting sitecomprises a handle hinge.
 22. The adjustable closure device of claim 21,wherein the handle of each chafe can rotate at the hinge between a downposition and an elevated position, wherein the elevated positionelevates the handle on the central side of the chafe.
 23. The adjustableclosure device of claim 22, wherein each chafe comprises a handle-downretention mechanism.